In 2018, sheryl is claimed as a dependent on her parent's tax return. Sheyl did not provide more than half her own support. What is Sheryl's tax liability for the year in each of the following alternative circumstances?

a) She received $5,100 from a part time job. This was her only source of income. She is 16 years old at year end.

B) She received $5,100 of interest income from corporate bonds she received several years ago. This is her only source of income. She is 16 years old at year end.

C) She received $5,100 of interest income from corporate bonds she received several years ago. This is her only source of income. She is 20 years old at year end and is a full time student.

D) She received $5,100 of qualified dividend income. This is her only source of income. She is 16 years old at year end.